Method for making multi-temperature refrigerator with variable vapourating temperature

An evaporating temperature, refrigerator technology, applied in refrigerators, compressors with cascade work, refrigeration and liquefaction, etc., can solve the problems of difficult room temperature control, reduction of effective energy utilization coefficient, etc., to achieve optimal heat transfer. The effect of temperature difference

Inactive Publication Date: 2007-08-29
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of the above-mentioned multi-temperature refrigerating machine, such as the reduction of the effective energy utilization coefficient and the difficulty in controlling the temperature of each compartment due to only having one-stage evaporation temperature, the purpose of the present invention is to provide a multi-temperature refrigerator with variable evaporation temperature. The preparation method of the refrigerator, which is based on the improved self-cascading refrigeration cycle, has two or three stages of different evaporation temperatures, and the evaporation temperature of the first stage can be adjusted within a certain range according to the required compartment temperature, and provides Non-azeotropic mixed working fluid suitable for this multi-temperature refrigerator

Method used

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  • Method for making multi-temperature refrigerator with variable vapourating temperature
  • Method for making multi-temperature refrigerator with variable vapourating temperature

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Embodiment 1

[0016] Embodiment 1: Referring to Fig. 1, the multi-temperature refrigerator with two-stage evaporation temperature and high-temperature evaporator evaporation temperature that can be adjusted within a certain range prepared by the method of the present invention includes refrigeration compressor A, condenser B, gas-liquid Separator C, condensing evaporator D, first throttle valve F1 and second throttle valve F2, high temperature evaporator E1, low temperature evaporator E2 and three-way flow distribution valve J2. The device uses a two-element or multi-element non-azeotropic mixed working medium, and its cycle flow is: the high-pressure exhaust port of the refrigeration compressor A is connected to the condenser B, and the mixed refrigerant vapor is partially condensed in the condenser B to become a gas-liquid The two phases enter the gas-liquid separator C, and in the gas-liquid separator C, the gas-phase working medium containing more low-boiling point component refrigerants...

Embodiment 2

[0021]Embodiment 2: Referring to Fig. 2, the multi-temperature refrigerator with two-stage evaporating temperature and low-temperature evaporator evaporating temperature that can be adjusted within a certain range prepared by the method of the present invention includes a refrigeration compressor A, a condenser B, a gas-liquid Separator C, condensing evaporator D, first throttle valve F1 and second throttle valve F2, high temperature evaporator E1, low temperature evaporator E2 and three-way flow distribution valve J1. The device uses a two-element or multi-element non-azeotropic mixed working medium, and its cycle flow is: the high-pressure exhaust port of the refrigeration compressor A is connected to the condenser B, and the mixed refrigerant vapor is partially condensed in the condenser B to become a gas-liquid The two phases enter the gas-liquid separator C, and in the gas-liquid separator C, the gas-phase working medium containing more low-boiling point component refriger...

Embodiment 3

[0026] Embodiment 3: Referring to Fig. 3, the multi-temperature refrigerator with three-stage evaporation temperature and wherein the first-stage evaporator evaporation temperature can be adjusted within a certain range prepared by the method of the present invention includes refrigeration compressor A, condenser B, Gas-liquid separator C, condensing evaporator D, first throttle valve F1 and second throttle valve F2, high temperature evaporator E1, low temperature evaporator E2, variable temperature room evaporator E3 and three-way flow distribution valve J1, J2. The device uses a two-element or multi-element non-azeotropic mixed working medium, and its cycle flow is: the high-pressure exhaust port of the refrigeration compressor A is connected to the condenser B, and the mixed refrigerant vapor is partially condensed in the condenser B to become a gas-liquid The two phases enter the gas-liquid separator C, and in the gas-liquid separator C, the gas-phase working medium contai...

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Abstract

The invention discloses a method to prepare a multi-temperature refrigerator with variable evaporating temperature. It adopts single compressor, condenser, gas-liquid separator, condensation vaporizer, throttle valve, vaporizer and three-channel flow distributing valve as components. The refrigerating medium is polyatomic unazeotropic mixed refrigerating medium. Based on the existed self-overlapping cycle, add a vaporizer used for high-temperature or change-temperature chambers and one or two three-channel flow distributing valves. According to the property of polyatomic unazeotropic mixed substance, adjust the component of mixed refrigerating medium in vaporizer to provide two or three different evaporating temperatures under the same evaporating pressure. One of the evaporating temperatures is adjustable on requirements of users. Applicable polyatomic unazeotropic mixed refrigerating medium is composed of low-boiling and high-boiling substance and selects one or more from them as component refrigerating medium. The method has merits of convenient control and energy-saving operation.

Description

technical field [0001] The invention relates to a multi-temperature refrigerator which can provide a lower compartment temperature and has a variable evaporation temperature of one stage and the non-azeotropic mixed working medium used, especially relates to a kind of mixed refrigerant group which can be adjusted by entering into the evaporator The preparation method of the multi-temperature refrigerator with multi-stage evaporation temperature and the non-azeotropic mixed working fluid used are divided to realize the adjustment of evaporation temperature. Background technique [0002] The freezing and refrigeration of food or medical supplies is one of the most widely used areas of commercial refrigeration. At present, the main form of this type of device is the "one machine with multiple temperatures" refrigeration device. The "one machine with multiple temperatures" type refrigeration device is to adapt to the different storage temperatures of different storages. A refrig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B7/00
Inventor 晏刚颜俊任挪颖
Owner XI AN JIAOTONG UNIV
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